72015124 has 12 divisors (see below), whose sum is σ = 126179200. Its totient is φ = 35963928.

The previous prime is 72015089. The next prime is 72015131. The reversal of 72015124 is 42151027.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 72015095 and 72015104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7044 + ... + 13915.

Almost surely, 2^72015124 is an apocalyptic number.

It is an amenable number.

72015124 is a deficient number, since it is larger than the sum of its proper divisors (54164076).

72015124 is a wasteful number, since it uses less digits than its factorization.

72015124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21822 (or 21820 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 72015124 is about 8486.1725176902. The cubic root of 72015124 is about 416.0458914486.

The spelling of 72015124 in words is "seventy-two million, fifteen thousand, one hundred twenty-four".